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.1.13.00TTRELL.v SPINDLE BOLSTER 0F SPINNING FRAMES.

No. 61,518. -Patented Jan. 219, 1867.

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T0 ALL PERSONS TO WHOM THESE PRESENTS SHALL COME:

Be it known that I, J'ELSE D. COT'TRELL, of Milford, in the county ofWorcester, and Sta-te of Massachusetts, have made a new and usefulinvention having reference to the Bolsters for Spindles ofSpinning-Frames; and I do hereby declare the same to be fully describedin the following specification, and represented in the accompanyingdrawings, of whichi Figure 1 is a vertical section; and y Figure 2, a.transverse or horizontal section of a spindle-bolster provided with myinvention.

v In order to prevent waste of oil from the'bolster of a spindle, it hasbeen customaryto combine with the bolster'l or apply thereto a-eup toreceive and hold the oil, such being as represented and described in theUnited States Patent No. 20,920, granted July 13, AQ D. 1858, to AmasaHoughton. It has also.been customary `to provide the inner surface-ofthe bolster with a helical groove to extend upward from the said cup andencompass that part of the spindle which is within the bolster, theobject of such groovev being to e`ect the elevation of the oil from thecup to the surfaces to be lubricated. While my invention accomplishes asmuch, 'there results from fit something more, that is to say, it al'ordsa means by which the bearing surface of the bolster may be renewed 'whenworn, and it enables a person to readily cleanseA the helical groove ofany extraneous matters which may' be deposited therein. When the grooveis formed in the bolster, and is immovable relatively thereto, it isliable to become more or less clogged by reason of the action of thecentrifugalfforce. generated in the oil by the spindle, the oil orgrease being forced and sometimes packed into the groove, so as to clogit more or less. My invention or improvement ena-bles `the groove orpart employed to form it to be' `eXtracted from the rest of the bolster,and cleansed, as occasion may require. When it mayA become too much wornby the spindle, .the helical bearing may be removed from the bolster,and another or fresh one maybe substituted therein for it. A commonbolster, when worn so as to be unservic-eable, becomes of no further usein the spinning-frame, but with my invention `applied to a bolster themain body or Apart of the bolster will never become worn'andunserviccable, but can always be retained in the spinning-frame. So,also, holsters, as usually made, when worn so as'to be unserviceable,can be altered or provided with my invention, and thus be utilized.Thus, my invention is productive of a saving in expense, for all of abolster that need be cast aside is the helical lining or bushing, toA behereinafter described.

In carrying out my invention, I make the bolster with a cylindricalchamber arranged concentrically within it, and for reception of thehelical bushing in which thespindle is to operate. This chamber Iprovide with an annular cap or cover to screw into it or on the bolster.Within the chamber Ipl'ace a helix of wire to rest on the bottom of thechamber and extend up to the cap thereof, the said cap'serving whenscrewed down upon the helical bolster to contract it, and with thebottom of the chamber to hold it firmly, in order that it may notrevolve within the chamber when the spindle is in revolution. Each ofthecoils of the'helix or helical bushing is to be at a. short distance fromthe next adjacent coil,.in order that there may be formed between themand by the inner surface of the bolster-chamber a helical channel,which, when the spindle is in the bolster, will envelop Yit and serve asa means of conducting oil from the oilchau1ber upward about that portionof the spindle which is within the bushing.

In the drawings, A denotes the holster, and the helical bushing arrangedin a cylindrical or annular chamber, a, formed in the bolster. C is thecap of the bolster, such cap being screwed into thc upper part ofpsuchvbolster. The helical bushing which is shown in Figure 3 us separate fromthe bolsterhis a simple helix formed of wire, square or rectangular, intransverse section.l A notch, c, malle in the lower edge of the bolster,is to open communication between the bolster-ohamber and the oil cup,which is to he used below the bolster, thesamc being in order that theoil from the cup may pass up into the helical bolster. By having thehelical bushing' separate, and removable from thc bolster, thc cleansingof the bushing becomes an easy matter, when it is removed from thebolster, to that of cleaning ahelicahgroovc made in the interiorsurfuceof the bolster.V

I make no claim to the application of a simple cylindrical tubularbushing to a bearing, nor do I claim the construction of n.spindle-bolster, with a helical groove so arranged within it as toencompass the spindle and aid in elevating oil thereon :is described.

What I claim as my invention 1s, the combination ofy the separatehelical bushing with the bolster, such bushing to be used thereinsubstantially in the manner and for the purpose described.

I also claim the bolster as made with a. chamber, ayand a screw-cap, C,or its equivalent, ns specied, to receive and hold a. helical bushing tobe arranged within the bolster, and used as and for the purposesexplained. I also claim the bolster as madewith the helical bushing,receiving-chamber, arid with a passage or.notch in the lo'ver partthereof to leadvout of the said chamber and into the oil-cup, when thebolster is arranged upon sueh a. cup as specified.

JESSE D. COTTRELL.

Wfnesses:

R. H. EDDY, F. P. HALE, Jr.

